ASTROSAT CZTI

Data Quality Report

Orbit 57205

Creation date: 2026-05-01T11:03:40.957521
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_070T08_9000006568_57205cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57205cztM0_level2_quad_clean.evt
Size (bytes)602,254,08087,531,840
Size574.4 MB 83.5 MB
Events in quadrant A2,726,071639,395
Events in quadrant B4,296,383656,108
Events in quadrant C5,348,399563,699
Events in quadrant D9,427,180346,332

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130192
B0171862
C0203894
D0325052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6378300.470367%
B63784446.961430%
C63775488.593382%
D6377257340.348126%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7552 6378 4 4 0.05% 0.06%
B 7552 6378 332 332 4.40% 5.21%
C 7551 6377 519 519 6.87% 8.14%
D 7551 6377 2637 2637 34.92% 41.35%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 251 12615 70.0 687 669 170.7
A 8 6 11543 63.72 687 669 170.7
A 3 14 10866 59.75 687 669 170.7
B 5 185 1231763 8683.39 668 644 141.8
B 10 16 127774 896.68 668 644 141.8
B 10 247 74989 524.37 668 644 141.8
C 15 224 2632935 14979.95 641 633 175.7
C 13 3 97177 549.41 641 633 175.7
C 14 254 44487 249.57 641 633 175.7
D 12 33 6914563 47928.53 503 478 144.3
D 2 249 123391 852.03 503 478 144.3
D 7 96 120502 832.01 503 478 144.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter